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Finding the Fourth Proportional to 5,279.83, 7,914.20 and 1,768.97

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Solution

The fourth proportional to 5,279.83, 7,914.20 and 1,768.97 is: 2,651.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,279.83 : 7,914.20 = 1,768.97 : x
  2. Step 2: Convert to fraction form
    5,279.83/7,914.20 = 1,768.97/x
  3. Step 3: Cross multiply
    5,279.83x = 7,914.20 × 1,768.97
  4. Step 4: Simplify right side
    5,279.83x = 13,999,982.37
  5. Step 5: Solve for x
    x = 13,999,982.37/5,279.83
  6. Step 6: Final answer
    x = 2,651.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.